Example: People were serving their activity streams feed under /feed.xml. Now json is the preferred format. Because they don't want to change anything, they allow /feed.xml?format=json. Ugly as hell, I agree.

Website is great, I am just going to be flying a bunch the next few days and there is no better time to get situated with this. In my oppinion if this where under the "welcome to mojolicious" text on the default /welcome page it would be quite ideal.